Hope all is well in the AQ world
After a long absence I need to get back to tinkering with my X8 Octocopter which is running with an AQ board and a DIMU 1.1 board. I'm still in the tuning stages and the last time I flew it I was still having vibration problems – see attached.
I have a few questions before I start tinkering again:
– Is there a 'stable' version of the DIMU code which you would recommend I start with? I've been told by some members to always use the latest version of the DIMU code as it's improving all the time, but by others to not use the latest code until it has been thoroughly tested. The last firmware I was using was 'aqv7.0.r414.b1790-hwv6.1-dimu1.1-drate80' – a derivative of r414 which I believe Max had tweaked (drate80).
- Which parameter should I adjust to 'smooth' the ESC demands? I've noticed on several occasions one of the motors (a different one each time) 'coughing' as it presumably loses sync with the ESC due to very rapid changes in speed demand. Reducing Tilt Rate D made a big improvement to smoothing the ESC demands (the motors used to make strong scratching noises). Does the attached MOT graph look particularly noisy?
- Is there a risk of high vibration levels causing saturation in the flight controller algorithms that could lead to a crash? The flight where the attached log files were recorded was actually a very smooth hover, so it seems to be flying fine – but I don't want to run the risk of having it fall out of the sky if it gets hit by strong turbulence that increases the vibrations still further.
Many thanks for your help, it's much appreciated – I want to get this platform flying well
David